Oliver/simple_graphing
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fading-tail #2

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Oliver merged 8 commits from fading-tail into master 2026-01-29 20:15:07 +00:00
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1 changed files with 92 additions and 122 deletions
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src/main.rs
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@@ -1,7 +1,8 @@
use core::f32;
use std::{io::stdin, time::Duration};
use std::time::Duration;
use macroquad::prelude::*;
use serialport::SerialPort;
const THICKNESS: f32 = 2.0;
const TAIL_LEN: usize = 500;
@@ -49,47 +50,66 @@ enum Axis {
One,
Two
}
struct Tail {
/// # Graph
/// Holds 1 contiguous line. Can be graphed on 1 or 2 axis.
struct Graph {
points: [Point; TAIL_LEN],
head: usize,
axis: Axis,
axises: Axis,
/// What the tail treats as 0
x_offset: f32,
/// What the tail treats as 0
y_offset: f32,
head_tracker: f32,
/// The graph's local origin
x_origin: f32,
/// The graph's local origin
y_origin: f32,
/// How fast X scrolls when using a since axis tail
px_per_s: f32,
}
impl Tail {
fn new(axis: Axis, y_axis_offset: f32) -> Self {
let (x_offset, y_offset) = match axis {
Axis::One => (0., y_axis_offset),
Axis::Two => (screen_width() /2., y_axis_offset),
impl Graph {
fn new(axises: Axis) -> Self {
let (x_offset, y_offset) = match axises {
Axis::One => {
(0., screen_height()*0.5)
},
Axis::Two => {
(screen_width()/2.,screen_height()/2.)
},
};
Self {
// start all the dots off screen
points: [Point::new(-1.,-1.); TAIL_LEN],
head: 0,
axis,
x_offset,
y_offset,
axises,
x_origin: x_offset,
y_origin: y_offset,
px_per_s: 750.,
head_tracker: 0.,
}
}
fn place_next(&mut self, delta_time: f32, x_displace: f32, y_displace: f32) {
match self.axis {
fn draw_axises(&self) {
// Horzontal line
// (0, y_origin) -> (max, y_origin)
draw_line(0.,self.y_origin,screen_width(),self.y_origin,1.,DARKGRAY);
// Vertical line
// (x_origin, 0) -> (x_origin, max)
draw_line(self.x_origin,0.,self.x_origin,screen_height(),1.,DARKGRAY);
}
fn place_next(&mut self, delta_time: f32, x_displacement: f32, y_displacement: f32) {
match self.axises {
Axis::One => {
// x will scroll while y gets displaced
if self.x_offset >= screen_width() {
self.x_offset = 0.;
if self.head_tracker >= screen_width() {
self.head_tracker = 0.;
} else {
self.x_offset = self.x_offset + (delta_time * self.px_per_s)
self.head_tracker = self.head_tracker + (delta_time * self.px_per_s)
}
self.push(Point::new(self.x_offset, self.y_offset+y_displace));
self.push(Point::new(self.head_tracker, self.y_origin-y_displacement));
},
Axis::Two => {
// both x and y will get displaced
self.push(Point::new(self.x_offset+x_displace,self.y_offset+y_displace))
self.push(Point::new(self.x_origin+x_displacement,self.y_origin-y_displacement))
},
}
}
@@ -139,27 +159,65 @@ impl Tail {
};
self.points[prev]
}
fn points(&self) -> usize {
self.points.len()
}
}
#[macroquad::main("Graph")]
async fn main() {
// Dot params
let realtive_y_origin =screen_height()*0.75;
// FIXME realtive_x_origin doesn't work yet
let realtive_x_origin =0.;
let mut tail = Tail::new(Axis::One, realtive_y_origin);
let mut graph = Graph::new(Axis::One);
// Selection box
let mut inital_x_pos = 0.;
let mut inital_y_pos = 0.;
// Tooling
let mut show_debug = true;
let mut plot_delta_time = 0.;
// Serial
let mut port = get_serial_port();
let mut serial_buf: Vec<u8> = vec![0; 8];
loop {
clear_background(BLACK);
graph.draw_axises();
let frame_delta_time = get_frame_time();
// keep track of the delta time since last plot
plot_delta_time += frame_delta_time;
if let Ok(x) = port.read(serial_buf.as_mut_slice()) {
let s: String = serial_buf.iter().take(x-1).map(|x| *x as char).collect();
if let Ok(parse) = s.parse::<f32>() {
// Only draw when requied
graph.place_next(plot_delta_time, 0., parse);
plot_delta_time = 0.;
}
}
graph.draw();
if is_key_pressed(KeyCode::F3) {
show_debug = !show_debug;
}
// toggle debug box
if show_debug {
// Debug cursor information
let (mouse_x, mouse_y) = mouse_position();
let size = measure_text(&format!("x{mouse_x}, y{}",-(mouse_y-graph.y_origin)), None, 30,1.);
draw_rectangle(mouse_x, mouse_y+(size.offset_y/4.), size.width, -(size.height), WHITE);
draw_text(&format!("x{}, y{}", mouse_x+graph.x_origin,-(mouse_y-graph.y_origin)), mouse_x, mouse_y, 30., BLACK);
// Debug textbox
let mut debug = DebugWindow::new();
debug.add_line(format!("FPS {:04}, Frametime {:05.2}ms", get_fps(), frame_delta_time * 1000.0));
debug.add_line(format!("Tail Length {TAIL_LEN}, px/s {:.2}", graph.px_per_s));
debug.add_line(format!("Cursor Pos {:?}", mouse_position()));
debug.add_line(format!("Serial Port {}, Baud Rate {}", port.name().unwrap_or("Unknown".to_string()), port.baud_rate().map_or(String::from("N/A"), |f| f.to_string())));
debug.draw();
}
next_frame().await;
}
}
fn get_serial_port() -> Box<dyn SerialPort> {
let port = serialport::available_ports()
.expect("No ports found!")
.iter()
@@ -170,95 +228,7 @@ async fn main() {
.open().expect("Failed to open port");
Some(x)
});
let mut port = port.expect("Failed to find valid serial port");
let mut serial_buf: Vec<u8> = vec![0; 8];
let mut plot_delta_time = 0.;
loop {
clear_background(BLACK);
match tail.axis {
Axis::One => {
draw_line(realtive_x_origin,realtive_y_origin,screen_width(),realtive_y_origin,1.,DARKGRAY);
},
Axis::Two => {
// horizontal (x)
draw_line(0.,realtive_y_origin,screen_width(),realtive_y_origin,1.,DARKGRAY);
// vertical (y)
draw_line(realtive_x_origin,realtive_y_origin, realtive_x_origin,screen_height(),1.,DARKGRAY);
},
}
let frame_delta_time = get_frame_time();
let mut y_displacement = 0.;
let mut x_displacement = 0.;
// keep track of the delta time since last plot
plot_delta_time += frame_delta_time;
if let Ok(x) = port.read(serial_buf.as_mut_slice()) {
let s: String = serial_buf.iter().take(x-1).map(|x| *x as char).collect();
if let Ok(parse) = s.parse::<f32>() {
y_displacement = parse;
// only draw when requied
tail.place_next(plot_delta_time, x_displacement, -y_displacement);
plot_delta_time = 0.;
}
}
tail.draw();
// Info about the cursor locaiton
let (mouse_x, mouse_y) = mouse_position();
let size = measure_text(&format!("x{mouse_x}, y{}",-1.*(mouse_y-realtive_y_origin)), None, 30,1.);
draw_rectangle(mouse_x, mouse_y, size.width, -(size.height+5.), WHITE);
draw_text(&format!("x{}, y{}", mouse_x+realtive_x_origin,-1.*(mouse_y-realtive_y_origin)), mouse_x, mouse_y-5., 30., BLACK);
if is_key_down(KeyCode::S) {
if y_displacement < screen_height()/2. {
y_displacement += 10.;
}
}
if is_key_down(KeyCode::W) {
if y_displacement > -(screen_height()/2.) {
y_displacement -= 10.;
}
}
if is_key_down(KeyCode::D) {
if x_displacement < screen_width()/2. {
x_displacement += 10.;
}
}
if is_key_down(KeyCode::A) {
if x_displacement > -(screen_width()/2.) {
x_displacement -= 10.;
}
}
if is_key_pressed(KeyCode::F3) {
show_debug = !show_debug;
}
// selection box
if is_mouse_button_pressed(MouseButton::Left) {
(inital_x_pos, inital_y_pos) = mouse_position();
}
if is_mouse_button_down(MouseButton::Left) {
let (x, y) = mouse_position();
let width = x - inital_x_pos;
let height = y - inital_y_pos;
draw_rectangle(inital_x_pos, inital_y_pos, width, height, Color { r: 0.2, g: 0.1, b: 1., a: 0.3 });
}
// toggle debug box
if show_debug {
let mut debug = DebugWindow::new();
debug.add_line(format!("FPS {:03}, Latency {:.2}ms", get_fps(), frame_delta_time * 1000.0));
debug.add_line(format!("Tail Length {TAIL_LEN}, px/s {:.2}", tail.px_per_s));
debug.add_line(format!("Cursor Pos {:?}", mouse_position()));
debug.add_line(format!("Serial Port {}, Baud Rate {}", port.name().unwrap_or("Unknown".to_string()), port.baud_rate().unwrap_or(0)));
debug.draw();
}
next_frame().await;
}
let port = port.expect("Failed to find valid serial port");
port
}